Once he entered the city at a time when its people were heedless; so he found in it two men fighting each other: This one was from his own group, and that one from his enemies. So the one from his own group called him for help against the one who was from his enemies. So Musa gave him a blow with his fist and finished him off. (Then) He (Musa) said (out of remorse), .This is some of Satan‘s act. He is indeed a clear enemy who misleads (people).